[编程交流] Lisp修剪简单图案填充

; chevron island creater
; this use the extrim command to trim shape
; By Alan H Jan 2012
(defun C:Chevron ( / obj pt1 pt2 pt3 pt4 newpt1 newpt2 )
(setq obj (car (entsel "\nPick pline or circle")))
; should do a object test here
(setq whatis (cdr (assoc 0 (entget obj))))
(if (= whatis "LWPOLYLINE")
(princ)
(progn
(princ "\You have picked something other than a polyline ")
(princ "\Remake into a pline and do again ")
(setq dummy (getstring "\press any key"))
(exit)
) ; progn
) ; if
(alert "draw a line at angle \nmake sure it is full over shape")
(setq pt1 (Getpoint "\nPick Line start point"))
(setq pt2 (Getpoint pt1 "\nPick end point"))
(command "line" pt1 pt2 "") ; 
(setq gap1 (getreal "\nenter spacing 1"))
(setq gap2 (getreal "\nenter spacing 2"))
(setq pt3 (getpoint "\nPick 1st cross point"))
(setq pt4 (getpoint pt3 "\nPick 2nd cross point"))
(setq dist (distance pt3 pt4))
(setq x (fix (/ dist (+ gap1 gap2))))
(setq newpt1 (strcat (rtos gap1 2 2) ",0.0"))
(setq newpt2 (strcat (rtos gap2 2 2) ",0.0"))
(repeat x 
(command "copy" "L" "" "0,0" newpt1)
(command "copy" "L" "" "0,0" newpt2)
)
(load "Extrim")
(etrim obj pt1)
) ; end defun
(princ)

(defun c:brkAll (/ *error* doc spc ss Objlst Obj iLst Altlst lst)
 (vl-load-com)
 (defun *error* (msg)
   (if doc (vla-EndUndoMark doc))
   (if ov (mapcar 'setvar vl ov))
   (if (not
         (wcmatch
           (strcase msg) "*BREAK,*EXIT*,*CANCEL*"))
     (princ
       (strcat "\n** Error: " msg " **")))
   (princ))
 (setq doc (vla-get-ActiveDocument
             (vlax-get-Acad-Object))
       spc (if (zerop (vla-get-activespace doc))
             (if (= (vla-get-mspace doc) :vlax-true)
               (vla-get-modelspace doc)
               (vla-get-paperspace doc))
             (vla-get-modelspace doc)))
 
 (setq vl '("CMDECHO" "OSMODE")
       ov (mapcar 'getvar vl))
 
 (vla-StartUndoMark doc)
 (or *brk$dis* (setq *brk$dis* 5.))
 (if (setq ss (ssget '((0 . "*LINE,ARC"))))
   (progn
     (or (not
           (setq tmp
             (getdist
               (strcat "\nSpecify Break Distance <" (rtos *brk$dis* 2 2) "> : "))))
         (setq *brk$dis* tmp))
     (setq Objlst
       (mapcar 'vlax-ename->vla-object
         (vl-remove-if 'listp
           (mapcar 'cadr (ssnamex ss)))))
     (while (setq Obj (car Objlst))
       (foreach iObj (setq Objlst (cdr Objlst))
         (setq iLst
           (cons
             (cons Obj
               (vlax-list->3D-point
                 (vlax-invoke Obj
                   'IntersectWith iObj acExtendNone))) iLst))))
     (mapcar 'setvar vl '(0 0))
     (foreach Int (vl-remove-if-not
                    (function
                      (lambda (x)
                        (vl-consp (cdr x)))) iLst)
       (setq Obj (car Int))
       (foreach Pt (cdr Int)
         (and Altlst (setq lst Altlst))
         (if (not (setq bDis (vlax-curve-getDistatPoint Obj Pt)))
           (while (and (not bDis) lst)
             (setq bDis (vlax-curve-getDistatPoint (setq Obj (car lst)) Pt)
                   lst (cdr lst))))
         (if bDis
           (progn
             (or (setq bPt1 (vlax-curve-getPointatDist Obj
                              (+ bDis (/ *brk$dis* 2.))))
                 (setq bPt1 (vlax-curve-getEndPoint Obj)))
             (or (setq bPt2 (vlax-curve-getPointatDist Obj
                              (- bDis (/ *brk$dis* 2.))))
                 (setq bPt2 (vlax-curve-getStartPoint Obj)))
             (command "_.Break"
               (list (vlax-vla-object->ename Obj) pt) "_F" bPt1 bPt2)
             (setq AltLst (cons (vlax-ename->vla-object (entlast)) AltLst)))))))
   (princ "\n** Nothing Selected **"))
 (vla-EndUndoMark doc)
 (mapcar 'setvar vl ov)
 (princ))
             
(defun vlax-list->3D-point (lst)
 (if lst
   (cons (list (car lst) (cadr lst) (caddr lst))
         (vlax-list->3D-point (cdddr lst)))))